Metallic link belting.



w. o. SIAIIII.4 METALLICv LIII'K BELTIING. APPLICATION FILED Nuns, 19u.

Patented July 20, ,1915.

@k mm Attorneys I WILLIAM O. STARK, 0F CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TOv

BUCYRUS COMPANY, OF SOUTH MILWAUKEE, WISCONSIN, A CORPORATION OF WISCONSIN.

Application filed November 29, 1911.

To all nfl/.om htmr/j/ frm/fern le it known that l, Wnmiiu t). S'Ituni, a citizen of the lnited States. .nid resident ot Chicago, in the eounty of Cook and State ot' Illinois, have invented certain new and useful lmprm'ements in Metallic Link lielting; and l do hereby declare that the lollowingl description of' my said invention. takeny in eonneetion with the accompanying sheet ot' drawings, forms a full, elear, and

exact specification, which willenable others.

skilled in the art to which my invention appertains to make and use the same.

ly inventipn relates generally to improvements in metallic link belts such as are particularly well adapted to use in conneetion with eonveying'machinery and has l'or one object to provide a, link belt which may be assembled without any machining operations and which will be operative even in the presence ot' grit, dust and the like for lone` intervals ot' time without lubrication andwvith a minimum oi wear and abrasion. Experience shows that theI material best suited Jr'orsuh serviee as this under such eircumstanees as these is manganese steel.

This is a material which is very hard, which wears smooth and which does not cut even in the presence ot 2ejrit and the absenee of lubrication. This material, however, is one which it is almost impossible tomaehine and itis necessary, therefore, to provid a belt the eoli'iponent parts otl whieh are so designed that they may be cast in the form in which they are subsequently to he used and may be assembled without machining. y A belt adapted to be used under sueh eireunistanees as these must be a belt wherein the coinponent parts or links may be removed without changing the leneth of the belt andy in this respect it is dillerimtiated from the well known type olA link belts wherein the component links are eaeh integral and are assembled by rotating' the links with respect one to the other into abnormal position.

My invention is illustrated diagramn'iatically in one form in the aeeompaifiyingr drawing, wherein- Figure l is a -diagrsnmnatie showing of a conveyor incorporating sue-h a belt; Fig. Q. isa detail side elevation on an enlarged scale ol my belt; Fig. 3 is a plan view show- Speccation of Letters Iatent.

.the buckets in position.

METALLIC LINK BELTING.

raient-ed July 2o, 1915.

Serial N0. 662,999.

let-

their opposed ends with bosses or tubular pivots 12, 1li ot' dillierent lengths. yl'hese pivots are held together by the tie pins 1H which pass throu them. The inner links have on either end the tubular pivots or bosses 1l, l5 oi dilt'erent lengths and ol'j such inner diameter as to lit or engage the pivots l2 and lil. These pivots Il and l5 are ol such length that when in the assembled position as indicated in Fig. ll they lil) snugly between the outer links that is to say the total length ot the pivots 14 and l5 plus twice the thickness ot the link l is equal to the totalv length ot the pivots l2 and 13. rlhese links are so assembled that the long pivot l2 projects through the short pivot l5 .ind there'lozie the line of cleavage between the pivots ot the inner links is at a dillier'ent point from the line of cleavagebetween the outer links, thus making these pivots overlap. The result otthis is that any tension on the chain is carried by the tulmlar pivots themselves and the sole function of the tie pin 18 is to hold these links together resisting any separating movement. l

A roller C surrounds the outertulmlar pivots 14 and 15 to support the links on any suitable belt eonveyei' track in the usual manner.

weight. The pins 1S are provided with (conical heads to engage the eountersinks in the outer links A so as to make a smooth surface. As indicated in Fig. $3 this pin 1S may have substituted therefor the rivet 17, butI when buckets are tobe carried onthe links the pins 18 extend through the tubular bosses 20 on the buckets l) and are provided with nuts 22 and locking washers 2l to hold The buckets are The links are shown as recessed at` 24 tor the purpose oli decreasingr their .ing through the bolts oi'- rivets linksby the pins 23 pass- 'countersunk holes 19 and lin'ks A provided with locking washers 21 and nuts 22. By the arrangement shown the also fastened tothe link beltmay be drawn over the sprocket.

wheels in the usual manner, the belt being coupled up before the buckets are attached. rlhe bucketsv may then be attached without interfering with the belt, those links where theI buckets aienot to be found being'riveted'togethei' and those links where the buckets are toA lie located being bolted as indicated.

As above noted the ymore or less soft steel act only as tension members to hold the component parts together and carry none ol the usual stress caused bythe tension on the chain.

would tend to wear down the pivots and this stress is carried by the manganese steel pivots exclusively. v .J

It will be evideiitthat while I have shown iii my drawing an operative device, still many changes might bemade in size, shape and arrangement of parts without departing materially from the spirit of my iliven- .tioii. I wish, therefore, that my drawing be regarded as in a sense diagrammatie;y

It is' this stress which Vhand in the presence of witnesses.

of pairs of flat, tubular pivot at either end, said 'bosses being inwardly extending, the longer 'boss on one 'plate abutting against the shorter boss on the other and vice versa, the bosses on the inner lifn'k surrounding the bosses on the outer, and ni'eans for holding 'tlieplates altogethei 'against lateral dis-.

placement with respect one to the other, said plates and their bosses being so disposed that tlie longer boss on the outer-'plate is immediat-ely adjacent to and surrounded bythe shorter boss on Ithe inner plate on the saine side and vice versa.

In testimony that I clai-iii the as iny invention,I have hereunto 'set my IVILLIAM O; STARK. Witnesses: 1 A s f FRIEDA T. LEBERSTEIN,

MICHAEL J. STARK.

and outer foregoing wo subscribing- 

